/* =========================================
   TOP NAVIGATION BAR - shared by index.html and about-the-developers.html
   (the two pages with a header/nav; the article pages just use a plain
   back-link instead, see shared.css).
========================================= */
header {
    width: 100%;
    background-color: var(--card-bg);
    border-bottom: 1px solid #e0e0e0;
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1000px;
    width: 90%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    flex-wrap: wrap;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

    .nav-links a {
        text-decoration: none;
        color: var(--text-color);
        font-weight: 500;
        transition: color 0.2s;
    }

        .nav-links a:hover {
            color: var(--accent-color);
        }

/* --- Dropdown Menu --- */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--card-bg);
    min-width: 220px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-radius: 8px;
    z-index: 1;
    top: 100%;
    left: -20px;
    border: 1px solid #e0e0e0;
    overflow: hidden;
}

    .dropdown-content a {
        color: var(--text-color);
        padding: 12px 16px;
        text-decoration: none;
        display: block;
        border-bottom: 1px solid #f1f2f6;
        font-size: 0.95rem;
    }

        .dropdown-content a:last-child {
            border-bottom: none;
        }

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a:hover {
    background-color: var(--bg-color);
    color: var(--accent-color);
}

@media (max-width: 600px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        gap: 15px;
        font-size: 0.95rem;
    }
}